BIO 201 Exam I Key Terms - Skeletal System

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Across
  1. 7. suture between frontal and parietal bones
  2. 8. concentric, cylindrical structures
  3. 10. process by which minerals deposited in the matrix as hydroxyappetite
  4. 11. 3 tiny bones in each middle ear for hearing
  5. 13. elongated, usually cylindrical shaft
  6. 14. wing-like
  7. 16. smooth surfaces where bones meet
  8. 17. category of the skeleton comprised of the skull, vertebral column, and thoracic cage (80 bones)
  9. 18. hole in something
  10. 21. category of the skeletons comprised of shoulder and hip bones and those of the upper and lower extremities (126 bones)
  11. 23. bone tissue that is made of trabeculae, internal surface of bones
  12. 24. knobby, enlarged regions at ends, strengthen joints, attachment site for tendons/ligaments
  13. 25. horn
  14. 26. tissues that grow and change throughout life, consisting of cartilages, bones, ligaments, and other supportive connective tissues
  15. 29. compact and spongy bone
  16. 30. suture between occipital and parietal bones
  17. 32. bone cells that maintain matrix and reside in lacunae, involved in remodeling
  18. 33. bone cells that dissolve bone, releasing calcium, resorption, involved in remodeling
  19. 34. strainer-like
  20. 36. between diaphysis and epiphysis, containing epiphysial (growth) plate
Down
  1. 1. basic structural unit of mature compact bone
  2. 2. cylindrical space in diaphysis, contains yellow bone marrow in adult
  3. 3. formation of new blood cells
  4. 4. bone tissue that is solid and relatively dense, external surfaces of long and flat bones
  5. 5. shell
  6. 6. open lattice of narrow plates
  7. 9. covers most internal surfaces of bones
  8. 12. suture between parietal bones
  9. 15. suture between temporal and parietal bones
  10. 18. depression found in bone
  11. 19. thin layer of hyaline cartilage on epiphyses, reduces friction between articulating bones
  12. 20. infant cranial bones are connected by flexible areas of dense regular connective tissue
  13. 22. smooth surface when two bones articulate
  14. 27. immovable joints between skull bones
  15. 28. dense irregular connective tissue covering external surfaces of bones, acts as anchor for blood vessels and nerves, anchored by perforating fibers embedded in the bone matrix
  16. 31. living organs containing all four tissues types, primarily connective tissues, extracellular matrix is sturdy and rigid, strengthened by calcification
  17. 35. cavity or hollow place, curved space